NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
accuracy requirements of optical linear algebra processors in adaptive optics imaging systemsA ground-based adaptive optics imaging telescope system attempts to improve image quality by detecting and correcting for atmospherically induced wavefront aberrations. The required control computations during each cycle will take a finite amount of time. Longer time delays result in larger values of residual wavefront error variance since the atmosphere continues to change during that time. Thus an optical processor may be well-suited for this task. This paper presents a study of the accuracy requirements in a general optical processor that will make it competitive with, or superior to, a conventional digital computer for the adaptive optics application. An optimization of the adaptive optics correction algorithm with respect to an optical processor's degree of accuracy is also briefly discussed.
Document ID
19950028503
Document Type
Conference Paper
Authors
Downie, John D.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1990
Publication Information
Publication: In: Advances in Optical Information Processing 4 (SPIE Vol. 1296)
Subject Category
OPTICS
Distribution Limits
Public
Copyright
Other